Cosi Fan Tutte or The School for Lovers is a comic opera by Wolfgang Amadeus Mozart. Scintillating, sexy and sung in English Picture this – you and your best friend are happily in love with two sisters who are happily in love with you.  However, another friend says that they would be unfaithful given half a chance.  “No”, you both cry.  A bet is laid, if you go away they’ll cheat on you – così fan tutte – “that’s what they all do”.  So, off you go to the army, but the plan is that you come back in disguise to seduce each other’s lover.  Do they forget you?  Do they each fall in love all over again – with...